The CMMG Drop In .22 LR AR15 Conversion Kit is what you need to turn your AR-15 rifle into a plinking machine. This conversion kit converts a .223 Remington chambered AR-15 into .22 Long Rifle allowing you to practice without spending a fortune at the range. The magazine holds 25 rounds of ammunition. All CMMG .22 LR magazines have a bolt hold open follower. For best performance use a round style hammer as notched hammers can cause function issues. 36 grain bullets have proven to be the best choice for function. - Drop In AR-15 Conversion Kit Alpha .22 Long Rifle - Phosphated Kit - 25 Round Magazine - Piston System Compatible
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